I bought Apple TV yesterday. The extisting TV had only one HDMI connection so I swapped it with a TV from another room which had two. MySky is plugged into one HDMI port and the Apple TV is plugged into the other. Both Apple TV and Sky work fine. I have a feed to various televisions in the house which displays the channel that is being viewed on the main TV. I receive this on an Analogue channel. This is working fine also. When I tested the digital TV reception, I had lost it on all TVs in the house. I did not touch any wiring except for unplugging the Sky HDMI connection, the AV1 connection to my DVD player and another plug which has one white and one red plug that was plugged into sockets under my HDMI connection on the old TV. the DVD works fine, so it must be the red and white plug that have sent things astray. I have tried them in various sockets in the back of the new TV and have had no luck. Does anyone have any advice on how I might fix this? A picture is attached of the connections prior to me moving the old TV. Thanks!

Margs333: Nope. All I did was unplug the specified plugs and plug them into the new TV.

But you swapped TV's... what about where the new TV USED to be.

And if you swapped TVs you must have messed with the antenna leads. You would have had to unplug them and plug back in after the swap. The red and white plugs are audio so are irrelevant to your problem. You obviously have a problem with your antenna cabling. The antenna lead is what supplies the digital signal to your TV tuner and supplies the Sky modulator to the other TVs.

Where the new TV was (in a spare bedroom) I unplugged the aerial cord and the power only. All of the components to receive a signal and transmit to the analogue channel are where the new TV now sits (in the lounge). I moved the old TV to the spare bedroom and reconnected the aerial cord.

The aerial connection plugs into the the Sky box, therefore I didn't have to unplug the aerial downstairs at any point. I just unplugged the HDMI cable that runs from the Sky box to the old TV and then plugged it into the new TV.

The most likely scenario here is that you have an amplifier, and its lost it's power supply. Amplifiers are usually powered via the aerial cord from either a power injector similar to the one below, or a Satellite decoder.

Yes I do have one of those and my first thought was that it had come unplugged. But it is still in the power socket and everything else plugged into the socket works, so I would have to presume that does also. It is at the back of my TV cabinet and I went nowhere near that area when I switched TVs. This is a mystery...

Ok I didn't want to get too technical as I don't think that is where the problem lies. The antenna is plugged into a box that (I presume) sends the analogue signal thoughout the houe. I discovered this when the messing around with channel numbers happened at the start of the month and I had to get a technician in to tell me that it used to be set to channel 38 and that no longer worked. So that box is connected via AV cables to the Skybox. Everything on Sky is working fine so I don't believe that the arial connection to this box is compromised. I unplugged it and plugged it back in to check and it made no difference. This box sits on a different shelf to the TV and was not disturbed druing the change-over.

So the DVB-T from antenna connects to a joiner on the output of the analog RF modulator???

My guess is that the TV concerned has no digital tuner maybe, given it was used for Sky only originally (if it does have a DVB-T tuner did you do any tuning). TV with DVB-T tuner (now in lounge) has no antenna connected to antenna input.

Umm that could be writen in Japanese and make more sense..! I hope that it is off-topic :) I reiterate that all I did was unplug one TV and plug another one in - everything was working fine before I switched the TVs. If you ignore plugging in the AppleTV and the DVD player, all I did was unplug the Sky HDMI and audio plugs and plug them into the new TV.